An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? A. 30 millimeters B. 5.0 millimeters C. 7.5 millimeters D. 15 millimeters

Answers

Answer 1

Answer: The correct answer for the question that is being presented above is this one: "D. 15 millimeters." An object 5 millimeters high is located 15 millimeters in front of a plane mirror. The image of the mirror is located 15 millimeters.

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Water is densest at 4°C. What is that temperature on the Kelvin scale?

Answers

Answer : The temperature on the kelvin scale is, 277.15 Kelvin

Explanation :

As we are given the temperature in degree Celsius. Now we have to need to convert the temperature from degree Celsius into kelvin.

Conversion used for the temperature from degree Celsius to Kelvin :

$K=^oC+273.15\n\nK=4^oC+273.15=277.15K$

Therefore, the temperature on the kelvin scale is, 277.15 Kelvin

4 + 273.15 = 277.15K

Why can color alone be used to identify most minerals?

Answers

Because a lot of minerals have the same color

1) Look at the graph. What is the independent variable and the dependent variable?

Answers

Answer:

Independent Variable = Years

Dependent Variable = Number of Mobiles phone owners

Explanation:

Independent variables are plotted on x-axis and the dependent variables are plotted on y-axis.

In given graph the "Years" belong to x-axis hence, years are the independent variables.

Also, "Number of Mobile phones owners" belong to y-axis hence, this number is the dependent variable.

How many moles of copper are equivalent to 3.44 × 1023 atoms of copper?

Answers

3.44x10^23 divided by 6.02x10^23 equals 0.571 mol Cu.

A hurricane’s energy comes fromA. condensation of large amounts of water vapor.
B. lightning striking as the storm forms.
C. the movement of continental tropical air masses.
D. the action of waves in warm ocean waters.

Answers

Huge storms called hurricanes have winds that rotate at a rate of 74 miles per hour. The spinning wind blows with a scary force across the tropical waters' warm surface. A hurricane’s energy comes from the condensation of large amounts of water vapor. The correct option is A.

Hurricanes are fueled by thunderstorms and warm ocean waters. Hurricanes frequently begin as tropical waves, which are low-pressure systems that pass over moist regions of the tropics and may intensify shower and thunderstorm activity. Hurricanes form over the ocean.

The eye, eyewall, and outer region are the three main components of a mature hurricane. A vertical cut through a mature hurricane's center.

Thus the correct option is A.

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A hurricane's energy comes from condensation of large amounts of water vapor.

The concentration of hydrogen peroxide (H2O2) can be determined by titrating it with an acidified MnO4− solution. The following is an unbalanced equation. MnO4− (aq) + H2O2 (aq) → O2 (g) + Mn2+ (aq)

(a) Balance the above redox reaction.
(b) Determine the concentration of H2O2 solution in molarity if 10.00 mL of this solution requires 20.00 mL of 1.5 M MnO4− for a complete reaction.